It's pretty informal but you can always round it out by saying: Cheers, I appreciate it.

这是特别不正式的，但你还是可以这样说：谢谢，我非常感激。

That tart cherry kind of rounds it out.

那种酸樱桃使它圆满。

We're gonna round it out, with some old-fashioned true or falses.

我们要用一些老式的真假来解决它。

The next year, Canada joined the Group, rounding it out to what we now know as the G7.

第二年，加拿大加入了该集团， 将其扩展为我们现在所知的七国集团。

The drifting cloud detritus gave it a kind of visible body, which explained many perplexing phenomena, and published its movements in plain terms, while the texture of the falling mass of rain rounded it out and rendered it more complete.

飘浮的云屑赋予它一种有形的躯体，解释了许多令人费解的现象，将它的运动表现得通俗易懂，而落下的雨团的肌理则使它更加圆润，更加完整。